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hydrogen sulphide monitoring Articles

Urban drainage structures have increasing demands which can lead to increasing hydrogen sulphide related problems forming in places where they have not previously been prevalent. This puts pressure on the methods currently used to monitor and diagnose these problems and more sophisticated methods may be needed for identifying the origin of the problems. Molecular microbiological techniques, ...

CoGDEM is the trade association representing manufacturers and service providers who are active in the field of gas detection instrumentation and environmental monitoring apparatus. Crowcon Detection Instruments Ltd was one of the founding members of CoGDEM, and in this article their Product Manager of Fixed Systems, Andy Avenell, gives an update on Landfill Gas. Landfill is by far the most ...

Infrared absorption Infrared absorption is usually the preferred method for measuring methane and carbon dioxide. Most gases absorb radiation in the infrared region. The wavelength of radiation that is absorbed is determined by the natural vibration frequencies of the molecule. These natural frequencies will depend on several factors. Thus different gas molecules have different natural ...

The latest Ground Gas monitoring innovations The traditional methodology for ground gas monitoring has been ‘spot monitoring’ – taking event readings at various set times to predict the sub surface gas regime on both on Brownfield and Landfill sites. This methodology is in general current practice under both the EU Landfill Directive ...

There is a strong business case for biogas monitoring and CHP protection. A fixed biogas analyser may cost some £6-10,000 and monitor gas every few minutes day and night. By comparison it can save its own cost many times over by protecting CHP engines from expensive unplanned downtime, biogas engine ...

As BiogenGreenfinch builds its next, much larger and first, second-generation anaerobic digestion (AD) facility at Westwood in Northamptonshire, it is making good use of everything it has learned from the construction and operation of its pioneering, commercial food waste AD plant at Twinwoods, Bedfordshire and the new technology now available. For BiogenGreenfinch the key to successful AD ...

By working with a range of partners worldwide, Geotech is involved in a range of projects at the cutting edge of biogas production and processing. The recent landmark deal agreed between Marks & Spencer (M&S) and Future Biogas, a major biogas plant operator, is for the purchase of biomethane certificates. The deal sees M&S purchase 35,000 Mega-Watt hours (Mwh) of certificates, ...

To check sludge AD, Southern Water uses portable biogas analysers specially developed for AD biogas and based on proven methane and associated gas analysis equipment from Geotech. Southern Water has an important routine; every single day it checks the health of its sewage sludge anaerobic digesters on eighteen sites across Hampshire, IoW, Sussex and Kent. There, each day Southern Water ...

Sewer systems are vulnerable to corrosion and, at times, can be the source of unpleasant odors. Kemira’s new H2S-Guard tackles both problems, as in most cases the source of these issues is hydrogen sulphide, forming in septic areas, in other words areas where no oxygen for metabolic reactions is available. The H2S-solution combines three important steps: measurement, monitoring and control ...

The Wastewater Purification Plant (EDAR) in Cambrils, Tarragona, was the setting for a solution deployed by Bioconservación, a gas absorption and air purification specialist. The project involved covering over the settling tanks to prevent hydrogen sulphide dissolved in the water from polluting the surrounding air. The H2S (hydrogen sulphide) dissolved in water as it arrives at the tank in ...

About the customer Harper Adams Energy in Shropshire, England, is responsible for running the anaerobic digestion plant at Harper Adams University College. The challenges the customer faced Plant manager, James Wood, wanted to monitor biogas composition automatically 24 hours a day, seven days a week. He wanted his own independent analysis of the gas ...

Plant manager, James Wood, wanted to monitor biogas composition automatically 24 hours a day, seven days a week. He wanted his own independent analysis of the gas mix and to record it in detail, especially the percentage of methane, hydrogen sulphide and carbon dioxide. How the company uses the GA3000 PLUS product James said: “We want our own gas analysis record ...

Common hazardous gases found in wastewater treatment plant facilities are hydrogen sulphide, methane, ammonia, carbon monoxide, chlorine and oxygen deficiency. Some facilities may also use ozone, chlorine dioxide or sodium hypochlorite with the chlorine during the sanitization treatment process. Furthermore, sulphur dioxide is often used to de-chlorinate the water once the treatment process is ...

Walking through a drill-site area, a worker smells rotten eggs and stops tor a minute or two to assess where a gas leak might exist. Rubbing his itchv eves as he investigates further, he notices that he no longer smells the tell¬tale hydrogen sulphide odour. He does not realize that the gas has deadened his olfactory senses and unless he leaves the area within seconds, he could lose ...

Intermittent discharges of industrial chemical pollutants into sewers can have a damaging effect on the processes involved in treating wastewater. They are sometimes able to pass through treatment plants and enter into the receiving water, to exert a harmful effect on the environment and possibly pass down a river to the intakes forwater supplies. We evaluated the use of an electronic ...

Introduction An offshore worker ensures a vessel is safe to enter; a plant manager enters a small plant room; a contractor inspects the lining of a sewage pipe. All these personnel face common dangers, despite working in widely different industries. Gas-related injury poses a serious threat in any confined space where the free movement of air is limited. A confined space ...

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